public static Object gsonToPrimitive(JsonElement element) {
if (element.isJsonPrimitive()) {
JsonPrimitive prim = element.getAsJsonPrimitive();
if (prim.isString()) {
return prim.getAsString();
} else if (prim.isBoolean()) {
return prim.getAsBoolean();
} else if (prim.isNumber()) {
return prim.getAsNumber();
} else {
throw new IllegalArgumentException("Unknown Gson primitive: " + prim);
}
} else if (element.isJsonArray()) {
JsonArray array = element.getAsJsonArray();
List<Object> list = new ArrayList<Object>();
for (int i = 0; i < array.size(); i++) {
list.add(gsonToPrimitive(array.get(i)));
}
return list;
} else if (element.isJsonNull()) {
return null;
} else if (element.isJsonObject()) {
Map<String, Object> map = new HashMap<String, Object>();
for (Map.Entry<String, JsonElement> entry : element.getAsJsonObject().entrySet()) {
map.put(entry.getKey(), gsonToPrimitive(entry.getValue()));
}
return map;
} else {
throw new IllegalArgumentException("Unknown Gson value: " + element);
}
}
private Object getObjectFromPrimitive(JsonPrimitive json) {
if (json.isBoolean()) {
return json.getAsBoolean();
} else if (json.isString()) {
return json.getAsString();
} else if (json.isNumber()) {
return json.getAsNumber();
}
return null;
}